Journal and Journal Articles: Recent submissions

Now showing items 761-780 of 5157

    • Smallholder farmers’ preferences for sustainable intensification attributes in maize production: evidence from Ghana 

      Kotu, B.H.; Oyinbo, O.; Hoeschle-Zeledon, I.; Rahman, N.A.; Kizito, F.; Boyubie, B. (2022-04)
      While sustainable intensification has been aggressively promoted as an agricultural development strategy among smallholder farmers since the beginning of the last decade, there is a dearth of evidence on whether farmers are interested in practicing it and how much value they put to its different components. This study aims at analyzing farmers’ preferences for maize production technologies within the lens of sustainable intensification. Employing a discrete choice experiment to generate over 12,500 ...

    • Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae) 

      Loko, Y.; Toffa, J.; Gavoedo, D.M.; Kitherian, S.; Orobiyi, A.; Tamò, M. (2022)
      Background Alloeocranum biannulipes Montr. and Sign.(Hemiptera: Reduviidae) is a predator present in stored yam chips and a promising biological control agent against Dinoderus porcellus Lesne (Coleoptera: Bostrichidae). Numerical responses of A. biannulipes to different densities (1, 2, 4, 6, and 8) of D. porcellus larvae were evaluated under ambient laboratory conditions (T°: 25 ± 2 °C; RH: 75–80%; photoperiod 12:12 h (L/D)). The number of consumed prey, duration of pre-oviposition and oviposition, ...

    • Diversity of Fusarium associated banana wilt in northern Viet Nam 

      Le Thi, L.; Mertens, A.; Vu, D.T.; Vu, T.D.; Anh Minh, P.L.; Duc, H.N.; de Backer, S.; Swennen, R.; Vandelook, F.; Panis, B.; Amalfi, M.; Decock, C.; Gomes, S.I.F.; Merckx, V.S.F.; Janssens, S. (2022)
      Fusarium is one of the most important fungal genera of plant pathogens that affect the cultivation of a wide range of crops. Agricultural losses caused by Fusariumoxysporumf.sp.cubense (Foc) directly affect the income, subsistence, and nourishment of thousands of farmers worldwide. For Viet Nam, predictions on the impact of Foc for the future are dramatic, with an estimated loss in the banana production area of 8% within the next five years and up to 71% within the next 25 years. In the current ...

    • Assessment of water yam (Dioscorea alata L.) landrace varieties for resistance to anthracnose disease 

      Bakayoko, L.; Pokou, D.N.; Essis, B.S.; Kouakou, A.M.; Dibi, K.E.B.; Kouassi, A.B.; Nzue, B.; Koutouan, T.T.; Zohouri, P.G.; N'guetta, A.S.; Agre, A.P.; Mondo, J.; Adebola, P.O. (2022-03)
      Bakayoko, L., Pokou, D.N., Essis, B.S., Kouakou, A.M., Dibi, K.E.B., Kouassi, A.B. & Adebola, P.O. (2022). Assessment of water yam (Dioscorea alata L.) landrace varieties for resistance to anthracnose disease. African Journal of Agricultural Research, 18(3), 178-193. Abstract: Yam anthracnose disease (YAD), caused by the fungus Colletotrichum gloeosporioides Penz, is the most damaging fungal disease of Dioscorea alata yam worldwide. Local yam varieties, which sustain Côte d'Ivoire’s farmers and ...

    • Effects of inter-row spacing on growth, seed yield and yield components of Soybean (Glycine max) in Makurdi, Benue State-Nigeria 

      Iyorkaa, N.; Omoigui, L.; Ugbaa, M.S.; Ekeuro, G.C.; Odo, P.E. (2021-05)
      Despite the numerous benefits of soybean, its grain yield per unit area in Nigeria is low estimated at 1.2 tons ha-1 compared to the worldwide average yield of 2.5 tons per hectare. The low yield is due in part to limited use of phosphorous fertilizer and poor crop management practices including low plant populations. Farmers in northern Nigeria including Benue State sow seeds in rows spaced 75cm. There has been little recommendation as to the exact row spacing that will give higher yield in soybean ...

    • Identifying new resistance to Cassava Mosaic Disease and validating markers for the CMD2 locus 

      Thuy, C.T.L.; Lopez-Lavalle, L.A.; Vu, N.A.; Hy, N.H.; Nhan, P.T.; Ceballos, H.; Newby, J.; Tung, N.B.; Hein, N.T.; Tuan, L.N.; Hung, N.; Hanh, N.T.; Trang, D.T.; Ha, P.T.T.; Ham, L.H.; Pham, X.H.; Quynh, D.T.N.; Rabbi, I.Y.; Kulakow, P.; Zhang, X. (2021)
      Cassava (Manihot esculenta Crantz) is a crucial staple crop, and provides carbohydrate energy to more than half a billion people in the tropics. Cassava mosaic disease (CMD) is the most important disease of cassava in Africa. Since Sri Lanka Cassava Mosaic Virus (SLCMV) was first reported in South East Asia in 2015, establishing sustainable solutions to CMD has become a top priority for the cassava program at the International Center for Tropical Agriculture (CIAT) and its partners. In the present ...

    • Potential of Metarhizium anisopliae and Beauveria bassiana to control Dinoderus porcellus (Coleoptera: Bostrychidae) infesting yam chips 

      Loko, Y.; Toffa, J.; Bada, B.; Dassou, A.G.; Zanzana, K.; Gavoedo, D.M.; Adikpeto, J.; Tamo, M. (2022-06)
      The beetle Dinoderus porcellus Lesne is a serious storage insect pest that causes important losses by destroying stocks of yam chips. In the aim to found an alternative control method to the use of synthetic insecticides for its management, the virulence of the entomopathogenic fungi Beauveria bassiana (Balsamo) Vuillemin (isolate Bb115) and Metarhizium anisopliae (Metschnikoff) Sorokin (isolate Met 31) against adults of D. porcellus was evaluated under laboratory conditions (25 ± 2 °C and 70 ± ...

    • The phosphate inhibition paradigm: host and fungal genotypes determine arbuscular mycorrhizal fungal colonization and responsiveness to inoculation in cassava with increasing phosphorus supply 

      Venegas, R.A.P.; Lee, S.J.; Thuita, M.; Mlay, P.D.; Masso, C.; Vanlauwe, B.; Rodriguez, A.; Sanders, I.R. (2021)
      A vast majority of terrestrial plants are dependent on arbuscular mycorrhizal fungi (AMF) for their nutrient acquisition. AMF act as an extension of the root system helping phosphate uptake. In agriculture, harnessing the symbiosis can potentially increase plant growth. Application of the AMF Rhizophagus irregularis has been demonstrated to increase the yields of various crops. However, there is a paradigm that AMF colonization of roots, as well as the plant benefits afforded by inoculation with ...

    • Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo 

      Adejumobi, I.I.; Agre, A.P.; Onautshu, O.D.; Adheka, J.G.; Bambanota, M.G.; Monzenga, J.C.L.; Komoy, J.; Cipriano, I.M. (2022)
      Yam (Dioscorea spp.) is cultivated in many villages of DR Congo as a means to sustain food security and alleviate poverty. However, the extent of the existing diversity has not been studied in details thus, considered as an orphan. A survey covering 540 farmers in 54 villages was conducted in six major yam growing territories covering three provinces in DR Congo to investigate the diversity, management and utilization of yam landraces using pre-elaborate questionnaires. Subject to synonymy, a total ...

    • Seed generation effect on quality of genetic information from maize (Zea mays L.) diallel cross for maize weevil (Sitophilus zeamais Motschulsky) resistance 

      Kasozi, L.C.; Derera, J.; Tongoona, P.; Gasura, E. (2021-05-20)
      t Maize weevil (Sitophilus zeamais Motschulsky) is a common insect pest affecting stored maize (Zea mays L.) worldwide and can be controlled by breeding for host resistance. Information on combining ability and gene effects conditioning maize weevil resistance would be required to devise breeding strategies. However, there are disagreements regarding the seed generation to subject to maize weevil resistance evaluation. This study determined the seed generation effect on the quality of genetic ...

    • Towards sustainable palm oil production: the positive and negative impacts on ecosystem services and human wellbeing 

      Ayompe, L.M.; Schaafsma, M.; Egoh, B.N. (2020-08-28)
      Palm oil is an important commodity contributing to livelihoods of many communities, GDP of governments and the achievement of several sustainable development goals (SDG) including no poverty, zero hunger, and decent work and economic growth. However, its cultivation and continuous expansion due to high and increasing demand has led to many negative effects and subsequent calls to make production sustainable. To this end, information is needed to understand the negative and positive impacts on both ...

    • Genetic diversity and environmental influence on growth and yield parameters of Bambara groundnut 

      Olanrewaju, O.S.; Oyatomi, O.; Babalola, O.O.; Abberton, M. (2021-12-20)
      Bambara groundnut (BGN) is a drought-tolerant crop majorly cultivated in sub-Saharan Africa. Due to a lack of extensive research, marginalization, lack of awareness, and lack of available fund among others, this crop’s improvement has been limited. The development of this crop depends on evaluation and selection of unique and stable breeding lines in different environments. This study aims to estimate genetic diversity using morphological traits at different locations in 95 accessions of BGN ...

    • Intermediation capabilities of Information and Communication Technologies (ICTs) in Ghana’s Agricultural Extension System 

      Munthali, N.; Lie, R.; van Lammeren, R.; van Paassen, A.; Asare, R.; Leeuwis, C. (2021-12-06)
      Information and communication technologies (ICTs), specifically those that are digital and interactive, present opportunities for enhanced intermediation between actors in Ghana’s agricultural extension system. To understand these opportunities, this study investigates the capabilities of ICTs in support of seven forms of intermediation in the context of agricultural extension: disseminating (information), retrieving (information), harvesting (information), matching (actors to services), networking ...

    • Entrepreneurial intention among undergraduate agricultural students in the Republic of Benin 

      Kaki, R.S.; Mignouna, D.B.; Aoudji, K.N.A.; Adeoti, A. (2022)
      In sub-Saharan Africa, where the professional insertion of graduates remains a major challenge, entrepreneurship represents an alternative to youth unemployment. This study investigates the predictors of agribusiness entrepreneurial intentions amongst undergraduate agricultural students in the Republic of Benin. A sample of 351 final year agricultural students was selected from universities. The data were collected through structured questionnaire and analyzed using descriptive statistics and a ...

    • Association analysis for resistance to Striga hermonthica in diverse tropical maize inbred lines 

      Stanley, A.E.; Menkir, A.; Ifie, B.E.; Agre, A.P.; Unachukwu, N.N.; Meseka, S.K.; Mengesha Abera, W.; Bossey, B.; Kwadwo, O.; Tongoona, P.; Oladejo, O.; Sneller, C.; Gedil, M. (2021-12-17)
      Striga hermonthica is a widespread, destructive parasitic plant that causes substantial yield loss to maize productivity in sub-Saharan Africa. Under severe Striga infestation, yield losses can range from 60 to 100% resulting in abandonment of farmers’ lands. Diverse methods have been proposed for Striga management; however, host plant resistance was considered the most effective and affordable to small-scale famers. Thus, conducting a genome-wide association study to identify quantitative trait ...

    • Scaling-up agricultural technologies: who should be targeted? 

      Bedi, S.M.; Azzarri, C.; Kotu, B.H.; Kornher, L.; von Braun, J. (2021-12-18)
      The effects of agricultural technology adoption on farm performance have been studied extensively but with limited information on who should be targeted during scaling-up. We adopt the newly defined marginal treatment effect approach in examining how farmers’ resource endowment and unobserved factors influence the marginal benefits of adopting sustainable intensification (SI) practices. We estimate both the marginal and average benefits of adopting SI practices and predict which marginal farm ...

    • Infection coefficient of Maize streak virus, leafhoppers composition and control using biopesticids and some cultural practices in agro‑ecological zones of Cameroon 

      Djomo, S.H.; Suh, C.; Mbong, G.A.; Fonkou, T.; Mafouasson, H.A.; Touna, P.; Sounou, A.P.; Fotso Kuate, A.; Nanga, S.N.; Fiaboe, K.; Meseka, S.K.; Menkir, A.; Langsi, J.D.; Dietrich, C. (2022)
      Maize streak virus (MSV) is a major threat to cereal production, hence food security in sub-Saharan Africa. The virus is spread mainly by insect vectors. The leafhoppers composition and distribution of potential MSV vectors were evaluated, and the performance of various control techniques against the vectors assessed in the major maize production areas of Cameroon. These techniques included the use of botanical extracts of Azadirachta indica A Juss. and Chenopodium ambrosoides L. Mosyakin and ...

    • Drying banana seeds for ex situ conservation 

      Kallow, S.; Zuluaga, M.G.; Sleziak, N.; Nugraha, B.; Mertens, A.; Janssens, S.; Gueco, L.; Valle-Descalsota, M.L.; Vu, T.D.; Vu, D.T.; Li, L.T.; Vandelook, F.; Dickie, J.; Verboven, P.; Swennen, R.; Panis, B. (2022-01-12)
      The ability of seeds to withstand drying is fundamental to ex situ seed conservation but drying responses are not well knownfor most wild species including crop wild relatives. We look at drying responses of seeds of Musa acuminata and Musa balbisiana, the two primary wild relatives of bananas and plantains, using the following four experimental approaches: (i) We equilibrated seeds to a range of relative humidity (RH) levels using non-saturated lithium chloride solutions and subsequently measured ...

    • Sustainable management of fall armyworm, Spodoptera frugiperda (J.E. Smith): challenges and proposed solutions from an African perspective 

      Nyamutukwa, S.; Mvumi, B.M.; Chinwada, P. (2022-01-27)
      Fall armyworm (FAW), Spodoptera frugiperda, is threatening food security in Africa and thus sustainable management strategies are required. The pest has spread to over 44 countries in Africa since its first detection in 2016, causing maize yield losses valued at between US$2,531 and US$6,312 million per annum. Owing to FAW’s damaging potential, many untested management strategies, including those of doubtful efficacy, are being used by smallholder farmers in Africa. We analysed existing and ...

    • Host plants and associated trophobionts of the weaver ant Oecophylla longinoda Latreille (Hymenoptera Formicidae) in Benin 

      Vayssieres, J.; Grechi, I.; Sinzogan, A.; Ouagoussounon, I.; Todjihounde, R.; Modjibou, S.; Tossou, J.C.; Adandonon, A.; Kikissagbe, C.; Tamo, M.; Goergen, G.; Chailleux, A.; Germain, J.; Adomou, A. (2021-12-30)
      1. The African weaver ant Oecophylla longinoda builds woven leaf nests inside tree canopies and is a major conservation biocontrol agent in sub-Saharan Africa. Weaver ant colonies provide well-protected and resource-rich environments for many associated trophobionts, thereby boosting their establishment on host plants. 2. There is very little published literature on O. longinoda, their hosts plants and their associated trophobionts in West Africa. These tri-trophic interactions were studied over ...